23 CFR §140.603
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Programs covering projects to be financed from the proceeds of bonds shall be prepared and submitted to FHWA. Project designations shall be the same as for regular Federal-aid projects except that the prefix letter “B” for bond issue shall be used as the first letter of each project designation, e.g., “BI” for Bond Issue Projects—Interstate.